Why is one of my dual SIM phones on the phone, but the other can t call?

There are only 2 explanations: one: your phone is not dual SIM dual belt just dual SIM single standby. True dual SIM dual standby, you can use one number to dial the other number in the phone, and it will also be connected. 2: You shut down the other card. I think it's the first case.

Hello, because the design of the mobile phone is dual-standby, but when the mobile phone terminal and the base station talk, the mobile phone has only one antenna, and only one SIM card can be exchanged with the basic air interface signaling, because the channel can only establish one channel at a time.

If the second call comes in, just the cell broadcasts, and the mobile phone receives the relevant instructions, but the channel is not established. So it can't be connected.

This is also IEEE

set up the protocol standard, so that's the principle.

Check if the SIM card is recognized. If it is not recognized, go to Settings - SIM Manager - Check if the SIM card is activated. If it doesn't work, please reinsert the SIM card or try to replace the SIM card. If the recognition is normal, continue with the following operations.

2.Check whether the SIM card is in arrears.

3.Restart the machine and try.

Note: Please back up the data in your device before upgrading. If the problem persists, it is recommended that you bring the purchase invoice, repair card and mobile phone to the local Samsung service center for professional engineers to help you test.

One is on the phone, how can the other get through?

Dual SIM Dual Standby Mobile Phone Card 2 can not be dialed ** because there is no sales balance to turn it on, the specific solution steps are as follows:

1. Take the MIUI system as an example, open the MIUI system settings application interface, and click the "Dual SIM and Mobile Network" setting item at the top of the page;

2. Next, click on the stop pin to enter SIM card 2 and enter the settings page;

3. Next, click the "Enable" button at the top of the page to enable the SIM card 2 function;

4. Finally, return to the **dialing page, enter the **number, and click on card 2 to dial the **number. If it is not the cause of the loss, it is suspected that the SIM card is in poor contact, and it is recommended to reinsert and remove the SIM card slot or replace the SIM card.

Both cards must have **number,There is**number can naturally be played**,If you don't have a problem with the setting,It's a problem with the phone,You see if you're not set up yourself.。

There is a call setting in the settings of the mobile phone -> Dual SIM settings -> Standby mode-> Dual SIM dual standby. That's it.

I just bought a dual-mode dual-SIM dual-standby, and it seems that I want to switch modes.

Is it a mobile phone problem?,I've used dual SIM dual standby before.,It's normal if you haven't set it up.。 You might as well take the place where mobile phones are sold and ask people what's going on.

Which card to move is not an early SIM card, you need to go to the mobile to change to a new card to solve the problem.

The two SIM cards share a single radio module, and of course they cannot make calls at the same time.

2. The mobile phone does not pay for the operator, in this case, you can only replace the SIM card of other operators.

3. The card is not available in the current network environment;

4. The internal files of the mobile phone are damaged or lost;

5. Caused by mobile phone hardware failure.

How to deal with the phone can't receive calls normally:

1. Check the status of the mobile phone to see if it is down;

2. If there is a signal that cannot be answered normally**, it is recommended to check whether to set up call forwarding or airplane mode;

3. If there is no signal, you can first ask the surrounding people whether there is also this situation, if there is also this situation, it may be that the network signal in your location is abnormal, it is recommended to call 10086 "manual" customer service feedback problem;

If there is no such situation in the surrounding people, it is recommended to change the mobile phone to test, if the mobile phone can be used normally, it is a problem with the mobile phone, it is recommended to check the mobile phone settings;

If you can't use your phone normally, it is recommended to go to the business hall to change your card.

Hello dear, there can be multiple reasons for this problem, here are some possible causes and corresponding solutions:1SIM card insertion error:

Please make sure that your SIM card is inserted correctly into the SIM card slot. 2.Weak signal:

If your device is in an area with a weak signal, you may have an issue of not being able to talk. Try moving to an area with a stronger signal or using a different SIM card for the call. 3.

Incorrect network settings: If your device isn't properly configured with network settings, you may not be able to talk. Please check your network settings and make sure they are correct.

4.Airplane mode: Make sure your device is not enabled for airplane mode, otherwise there is no wide number method for calling.

5.SIM card failure: If your SIM card is damaged, it can cause the call to fail.

Try replacing it with another SIM card or contacting your carrier to get it replaced. Hello dear, if my answer is helpful to you, please also give a thumbs up (comment in the lower left corner), look forward to your like, your efforts are very important to me, and your support is also my progress of the fierce Bili. If you feel that my answer is still satisfactory, you can click on my avatar for one-on-one consultation.

Finally, I wish you good health, a happy mood and all your wishes come true!

Reasons and solutions for one call on a dual-SIM phone and the other inability to call:1Bad signal:

Poor network coverage in an area can cause one of your SIM cards to be unavailable**. 2.SIM Card Issues:

It is the question of which pants to let in relation to the card. Please make sure that the card is properly installed and that there are no damage or expiration of the slacks. 3.

Software Issue: This is a problem related to the software of the Dual SIM phone. You can try restarting your phone or clearing the cache to fix these issues.

4.Setup issues: Dual SIM phones have the transfer function turned on, and Tanjan must set all calls to be made via the required SIM card.

Kiss. One card slot of the dual-SIM phone can be bridged to make a call, while the other card slot cannot be used for calling, which may be caused by the following reasons:1

Network signal problem: First, you need to check whether the signal of the other card slot is normal. If the signal is weak or there is no signal, you may not be able to make a call.

2.SIM card failure: If the signal is normal, it may be that another SIM card is malfunctioning.

You can try to insert this SIM card into another phone to test it and see if you can make calls. If you can't make calls in another phone either, then there may be a problem with the SIM card itself. 3.

Problems with phone settings: If there is no problem with the signal and SIM card, there may be a problem with the phone's settings. You can try to go into your phone's settings and check if any of the relevant settings are disabled or incorrect.

If you are not sure how to check or modify the settings of your phone, you can refer to the manual of your phone or consult the customer service of the mobile phone manufacturer. If none of the above methods can solve the problem, it is recommended to contact the mobile phone manufacturer or professional repairer for inspection and repair.

Single-chip dual-SIM dual-standby, that is, there is only one CPU, one font, and one power amplifier. This kind of mobile phone cannot be answered at the same time, and when card 1 calls card 2, it will prompt that it cannot be connected temporarily.

Advantages and disadvantages of dual SIM dual standby mobile phones:

The first advantage of dual-SIM dual-standby mobile phones is that they can standby two mobile phone cards at the same time, so that we can separate work and life, work with one number, and live with one number, which is very convenient.

Another advantage is that you can use one SIM card to make calls without missing important information when one SIM card can't answer. Another advantage of dual SIM dual standby mobile phones is to display identity and improve the user's grade.

First of all, its first disadvantage is that it consumes too much electricity. Since the dual-SIM dual-standby mobile phone needs to run the functions of two mobile phones at the same time, the power consumption is very large, and the general dual-SIM dual-standby mobile phone is very power-consuming. The second is that the dual-SIM dual-standby mobile phone is easy to confuse the two cards when the finger is used late, which leads to various errors.